The park has long been known as a haven for boating, camping, hiking and picnicking, but its real treasure may lie in the wonderful CCC work that can be seen throughout the park. CCC projects in the park include hiking trails, roads, bridges, buildings (including the Castle, Brimmer Point and the Museum) and even a 9 hole golf course (which was abandoned in the early 1940s). Guernsey State Park was created when the Civilian Conservation Corps (CCC) went to work in 1933. The CCC's workers completed approximately 85% of the planned project before they were disbanded in 1936. Visitors can now enjoy the fruits of these labors, most especially with the Guernsey museum. The museum is located on a high cliff, overlooking the water. The building itself, made of hand hewn timbers and hand forged iron, has been called one of the finest examples of CCC building and architecture in the United States. The roof is framed with the timbers and covered with split cedar shakes, and the floors were formed by pieces of smooth flagstone quarried at Thermopolis, WY.

• Visit the Guernsey museum located on a high cliff, overlooking the water.